Intermittent operating mechanism



April 8, 1952 J. ERWOOD 2,591,796

INTERMITTENT OPERATING MECHANISM Filed June 21, 1947 7 Sheets-Sheet l Z1 g 3 37 ljgj April 8, 1952 .1. ERWOOD INTERMITTENT OPERATING MECHANISM'7 Sheets-Sheet 2 Filed June 21, 1947 for" pr 8, 1952 J. ERWOOD2,591,796

I INTERMITTENT OPERATING MECHANISM Filed June 21, 1947 7 Sheets-Sheet 3v J. ERWOO D INTERMITTENT OPERATING MECHANISM April 8, 1952 TSheets-Shbet. 4

' Fiied June 21, 1947 I lll J. ERWOOD INTERMITTENT OPERATING MECHANISM Aril 8, 1952 7 Sheets-Sheet 5 Filed June 21, 1947 April 8, 1952 J. ERWOODINTERMITTENT OPERATING MECHANISM Fi led June 21, 1947 7 Sheets-Sheet 6gwiif m .M N m llrLL /AM \P Jizaen pkfiwbad April 8, 1952 J. ERWOODINTERMITTENT OPERATING MECHANISM 7 Sheets-Sheet 7 Filed June 21, 1947Patented Apr. 8, i952 ES PATENT OFFICE INTERMI TTENT OPERATING MECHANISMJoseph Erwood, Crystal Lake, 111., assignor by mesne assignments, toWilliam J. 'McGah, as

trustee Application June 21, 1947, Serial No. 756,273

2 Claims. (crem -1 The present invention relates generally tointermittently operable apparatus, and has more particular reference tomechanism. for delivering or feeding phonograph records successivelyinto operating position in record playing equipment.

Feed mechanism of the character mentioned may comprise automatic recordfeeding apparatus, in combination with record playing mechanism,including means -for delivering record members or discs successivelyfrom, a stack or magazine to a motor driven disc turntable, andmechanism for accomplishing, related control operations, including theapplication and withdrawal of a sound pick-up device to and from arecord disc on the turntable, in timed relation with the operation ofthe record disc feeding ap paratus, whereby to permit a series of recorddiscs to be played successively, in automatic fashion, on the turntable.

An important object of the present invention is to provide improved andsimplified feeding apparatus having a minimum number of operating parts,requiring minimum care and adjustment,

aifording improved operating performance, and

adapted for manufacture at low cost.

Another important object is to provide apparatus of the charactermentioned adapted normally to be retained in cocked, yet inactive,condition, thus eliminating operational noise, while inactive, themechanism being rendered active, at the conclusion of the operating cyclof associated operatingmechanism, whereby to deliver an object to be fedto such associated mechanism, and to perform related control operations,and then to return to inactive cooked position; a further object beingto provide means operable for, releasing the feed mechanism foroperation at any time during the performance of the operating cycle ofthe associated apparatus.

Another important object is to provide simplified driving mechanismintermittently oper-' able for delivering records, in succession as froma stack or magazine, to playing position, as on a record support orturntable of associated record playing mechanism, including mechanismfor raising, lowering and swinging the sound pick-up device of therecord playing mechanism as a part of the record feeding cycle; afurther object being to actuate the pick-up device by means of a camoperated in timed relation with the feeding mechanism, at intervalsduring its operating cycle; a still further object being to swinginglymove the pick-up device by means of a friction wheel and driving segment2. operatively connected with the driving mechanism.

to shift the lowermost record, in a record stack,

to release the same from the stack for delivery to the. turntable; yetav further object of the invention being to provide novel and simplifiededge pushing mechanism conditionable to cooperate with records ofvarious sizes by the operation of an adjustable controlmember.

Another important object isto provide edge pushing mechanism includingedge supporting means for supporting the edge of a record stack, whereinsaid edge supporting means is normally urged toward projected supportingposition but may yield upwardly to facilitate removal of records, froman associated turntable, in an upward direction past said edgesupporting means; v V

Another important object resides in providing edge pushing means,including an adjustable member or plate having a portion or portionsadapted to underlie and support the edges of records forming a recordstack, said member being adjustable in a direction radially of saidstack whereby to position the same for the edge support of records ofunlike size, including an edge pushing member on said plate and movabletherewith, as the same is adjusted radially of the 'record stack, andmeans to relatively shift the 'in a record playing apparatus, includinga stop positionable in any selected one of a numberof controlledpositions for determining the starting position of the pick-up device,of the record playing apparatus, at the start of a record playingoperation, so that the apparatus may be adjusted to play records ofvarious sizes; a further object being to provide for so determining thestarting .automatic feeding mechanism.

position of the pick-up device by engagement of a stop member, thereon,with a cooperating latch during the operating cycle of the recordfeeding mechanism.

Another object is to form the latch to receive the stop member in anyselected one of a plurality of detents, on the latch and representingthe various possible tone arm starting positions,

the latch being cooperatively associated with adto reject the recordbeing played by causing a succeeding record to be fed from the stack to1 playing position on the turntable.

Another important object is to provide simpli- .fied means for releasingthe mechanism for the performance of its cycle of operation,automatrecord on the turntable.

Another object is to provide for manually releasing the feedingmechanism for record rejecting purposes, as during the playing of anunwanted record.

Another important object is to provide for locking the mechanism incocked, inoperative position, whereby the associated apparatus may beconditioned to function, as if not provided with Another importantobject is to actuate the mechanism by means of a driven cam; a furtherobject being to provide for the driving of the cam ing to connect thecam to the motor driven turntable to thereby drive the same; yet afurther object being to form the cam asa generally helical groovein acam member suitably journaled for said pins being releasable to initiatethe cycle of operation, and on release being adapted to engage thespiral cam whereby to move the operating mechanism in one direction to aprojected posiically, as at the conclusion of the playing of a by theturntable motor; a still further object betion, said pin being releasedfrom the cam and latched in inoperative position when the mechanismreaches such projected position, and the other pin being then releasedfor driving engagement with the cam to thereby return the mechanism toits inactive or stand-by position, in which position said other pin isreleased from the cam and relatched in inactive position so thatthefeeding mechanism, after performing its operating cycle, is returnedto inactive stand-by position, in

which it remains cocked and ready for a repeat performance.

Another important object is to employ the movement of the operatingmechanism in one direction to lift and retract the pick-up device of therecord player to a retracted or stand-byposition clear of the recordstack and turntable, then to actuate the record feeding mechanism, andto employ the movement of the operating mechanism, in the returndirection, to swing and deposit the pick-up device, in playing position,on the changed record.

Another important object is to provide for the release of the operatingmechanism, for the performance of its operating cycle, by a latchreleasing cam, driven by the turntable motor, and a latch releasemember, normally held inactive so that the cam may not engage andactuate it, the release member being released for movement into the pathof the cam, in response to movement of the sound pick-up device at theend of its record playing movement, or by operation of manual releasemeans such as a reject control member, such normally inactive releasemember preventing accidental operation of the operating mechanism andinsuring operation thereof only in a desired manner.

The foregoing and numerous other important objects, advantages, andinherent functions of the 'invention will become apparent as the same ismorefully understood from the following description, which, taken inconnection with the accompanying drawings, discloses a preferredembodiment of the invention.

Referring to the drawings:

Fig. 1 is a top plan view of a phonographic record player embodying thepresent invention.

Figs. 2 and 3 are, respectively, afront and a side view of the apparatusshown in Fig. 1.

Figs. 4 and 5 are sectional views taken, respectively, along lines 4-4and 5-5, in Figs. 3 and 2.

Fig. 6 is a view of the under side of the apparatus shown in Figs. 1, 2and 3.

Figs. 7, 8, 9, ll, 12, 13 and 14 are sectional views of the apparatustaken, respectively, along the lines l'|, 8-8, 9--9, llll, l2l2, l3l3.and l4--l4, in Figs. 3, 6, 7, and 13; and

Fig. 10 is a fragmentary view of portions of the mechanism illustratedin Fig. 9.

To illustrate the invention the drawings show a record player I 1,comprising a support plate I 2 carrying a record turntable l3 adapted tosupport a record M in playing position thereon. The

turntable is mounted for rotation on the support plate l2, as insuitable bearing means [5, the turntable preferably having a centrallydisposed sleeve member I6 extending through the bearing The turntablemay be, and preferably is, driven by an electric motor ll, in anysuitable or preferred fashion. As shown, the motor may be secured uponthe plate l2, on the under side thereof, and may have a shaft l8extending through the plate l2 and carrying a turntable driving wheel inposition to drivingly engage a downwardly turned marginal rim on theturntable. Operation of the motor may be controlled by a suitable switchl9, preferably mounted on the plate [2, the switch having its manuallyoperable member exposed above the plate and being electricallyconnected, beneath the plate, in a suitable electric motor energizingcircuit.

The plate [2, outwardly of the turntable, may be provided with apedestal 20 on which a pick-up device comprising an arm 2| is pivotedfor swinging movement about the vertical axis of the pedestal. The armis also mounted for movement about a horizontal axis at the top of thepedestal,

on and extending beneath the plate !2.

so that-a pick-up device at the swinging end. of the arm may engageandmay be raised from engagement with a record in playing position on theturntable. The pick-up device on the arm 2! may be connected with anysuitable sound reproducing apparatus, so that by applying the pick-updevice to a record on the turntable and by operating the motor H, theapparatus may reproduce the sounds recorded on the record.

The presentinvention contemplates the provision of mechanism for theautomatic delivery of records in playing position on the turntable. Suchmechanism, as shown, may comprise magazine means for carrying a stack ofrecords 22 in position to be delivered successively into playingposition upon the turntable, the delivery mechanism including meansoperable for ejecting records successively from the stack onto theturntable. To this end the turntable support sleeve it, which extendsthrough the bearing I5, is turnably mounted at its lower end in abearing 23, which in turn is supported on a mounting bracket 24, ofgenerally U-shaped configuration, carried A record stack supportingcenter pin 26 extends within the sleeve I 6, which is freely turnableabout said cen- V ter pin. The lower end of the center pin may besecured as by means of a fastening nut 27 to a mounting member 28 on thebracket 24, at and in line with the lower end of the sleeve member 53,said mounting member 28 forming a casing for the bearing 23. The centerpin 25 is thus held against turning movement while the turntable isrotated about the axis of the pin.

The pin 26 extends upwardly of the turntable and has upper portions 25,above a shoulder 29, formed to rectangular sectional configuration. Thisportion of rectangular sectional configuration'is cut away as at 39 toform a downwardly facing shoulder 3! on one side of the pin, The

pin portion 25, on the side thereof opposite from the cut away portion30 may also be cut away to'form a recess 32' terminated by a downwardlyfacing shoulder 32. The pin also carries a channel shaped lever 33,having side portions embrac ing the pinportion 25, above the shoulder29, and pivotally secured to said portions as by means of a pin 34. Aleaf spring 35 may be enclosed within and carried by the member 33, inposition to bear upon the pin portions 25, in the recess 32', tonormally urge the member 33 on its pivot in a direction to project theupper end of the member 33 normally outwardly of the shoulder 32 to forman upwardly facing ledge or shoulder 35, the

member 33 being depressible against the urge of the spring 35 to bringthe shoulder 36 into facing alignment with the shoulder 32. When in suchposition, the member 33 extends within the cut out portion or recess 32forming the shoulder 32,, and provides in effect a continuation of thecylindrical portions of the center pin. It should be noted that thedownwardly facing shoulder 3i and the upwardly facing shoulder 36 arespaced apart a distance slightly greater than the thickness of a recordl4.

The foregoing arrangement of the center pin allows it to function as ameans for supporting the record stack 22, the records of the stack beingcarried in concentric alignment with the upper end of the center pinextending through the aligned center openings of the records. Therecords, of course, may be applied to the center pin by inserting theiraligned center openings over the upper, preferably rounded, end of thepin, and the records will be supported-by the upwardly facing shoulder36, underlying the lowermost record of the stack at the central openingthereof. It will be noted that all of the records in the stack, thussupported, with theexception of the lowermost record, are positivelyheld in concentric alignment by the upper portions of the center pin.Since the downwardly facing shoulder 3| of the center pin is spacedabove the upwardly facing shoulder 36 a distance slightly greater thanthe thickness of a record, the lowermost record in the stack may bemoved on the center pin in a direction to align its central opening withthe hollow lever 33. When so moved, the lowermost record will be free tofall, under the influence of gravity, in a downward path, guided by thecenter pin, and thus be deposited as a record it in position to beplayed on the turntable.

In order to thus more the lowermost record in the stack 22, to releaseor eject it from the stack and deposit it in playing position on theturntable, edge pushing mechanism 31 may be provided. This pushingmechanism may comprise a suitable, preferably sheet metal, frame forminga pedestal 33 on the support plate l2, outwardly of the edge of theturntable. The top 38 of the pedestal preferably forms a slideway onwhich a plate member 39 is mounted for adjustable sliding movement in adirection radially of the record stack 22. To this end, the plate 39 maybe formed with a slot 43, and the pedestal may carry a pair of guideprojections, which may conveniently comprise set screws 41, for securingthe plate 39 on the pedestal and guiding its adjustable movementthereon. The plate 39, at its stack facing edge, may be provided with apair of lugs or cars 42, in position to underlie the edge of thelowermost record in the stack 22, and thereby support the stacksubstantially horizontally on the shoulder 36 of the center pin and onthe lugs 42, the plate 39 being cut back, as shown more particularly inFig. 1, intermediate the lugs. Accordingly, by projecting the plate to apredetermined position of adjustment on the pedestal 38, the supportinglugs may be positioned to support a stack of records of small size suchas standard ten-inch phonograph records. By retracting the plate 39 toanother adjusted position, the lugs 42 may be adjusted for the supportof a record stack of larger records, such as standard twelve-inchrecords. In this connection the slot 40 and members 4| may be sized andarranged to limit the adjustable movement of the plate 39 for theaccommodation of standard ten-inch and twelveinch records, or othercooperating stop means may be provided for determining the desiredadjusted positions of the plate 39 on the pedestal 38.

In order to accomplish the adjusting movement of the plate 39, it may beprovided with an upstanding lug or finger 43, and this finger may bereceived slidably in a slot 4'! formed in an actuating lever .8 pivotedas at 49 on the pedestal 3B. A crank pin 50, extending in the slot 41,preferably at the end thereof remote from the pivot 49, may be employedto-actuate the lever for Y the adjustment of the plate 39. To this endthe crank pin 50' may be mounted on a crank arm 5| said arm being fixedon an operating shaft 52. The shaft 52, in turn, may be journa-led in asuitable bearing formed in a cover member 53 adapted for removableattachment on top of the pedestal I'of aprojeoting spring H.

' As shown, the lugs 42 may comprise sheet metal members pivotallysupported on the plate 39 as by means of pivot pins 33; and the members42 may be provided with extensions 44 adapted to engage the under sideof the plate 39 in order to support the lugs 62 in stack supportingposition on the plate 38. Spring means 45 may also be provided tonormally urge the lugs 12 on the plate toward stack supporting position.This arrangement, however, will allow the lugs 42 to rotate on the plate39 upwardly, that is to say, in a clock wise direction viewing Fig. 7,against the spring means 45. This arrangement, in conjunction with thedepressible center pin member 33, facilitates the removal of a record orrecords from the turntable by merely lifting the same upwardly on thecenter pin. As records are moved upwardly from playing position on theturntable, the member 33 will be depressed on the center pin, therebyallowing the records being removed to clear the shoulder 3i, and thelugs 12 likewise will rotate upwardly to allow the edges of the records,being removed, to freely pass the edge supporting device.

A pusher plate 55 is mounted on and carried by the adjustable plate 39,said pusher plate being relatively movable on the plate 33 in adirection radially of the record stack 22. To this end the plate 55 maybe formed with an elongated slot 55. and the plate 39 may carry a pairof ears, preferably comprising set screws El, in position extending inthe slot to guide the sliding movement of the plate 55 on the plate 39.The plate 55 also may be formed with a cut out slot 58 in position toregister with the slot to, the slot 58 being sufficiently large to clearthe heads of the set screws 4| to avoid interference thereof with theplate 55. The plate 55 is normally urged toward a retracted position onand with respect to the plate 39, as by means of a retracting spring 53,having its opposite ends connected on lugs formed on the plates 3s and55, respectively The plate 55 also has a pair of actuating shoulders 60and 69 formed therein, and the underlying plate 39 is cut away as at 6|and 6! opposite said shoulders Eli and Bil. An actuating lever 62extends within the pedestal 38. This lever is pivotally mounted as on apin 63, and has an end 6-4 extending beneath the plate I2, through aslot 65 therein. The other end 68 of the lever 62 is disposed adjacentand immediately beneath the plate 38, which forms the pedestal portioncarrying the plates 39 and 55. This plate 33 is formed with a slot 6'1,in position registering with the shoulder 60 of the plate 55 when saidplate and the plate 39 are projected position for accommodating recordsof relatively small size. The slot 81 is likewise in position toregister with the shoulder 60' when the plates 39 and 55 are inretracted position for the accommodation of records of large size. Thelever end 66 carries a pusher finger member 68 pivotally mountedthereon, said pusher finger member having a finger portion 69 inposition to extend through the slot 61 and pushingly engage one or theother of the shoulders Ell of the plate 55, when the.

lever 52 is moved on its pivot 63 in a clockwise direction viewing Fig.7. The lever 62 is normally held in retracted position as by means of aspring 10. When in such retracted position, the member 69, because ofthe engagement of the finger portion 63 with the end of the slot 61,will likewise be in retracted position against the influence By movingthe lever 64 on its pivot 63 against the influence of the spring 10, itsend 66 will be advanced toward the plate moving shoulders 60 and 60.Simultaneously, the member 68 will be released for movement under theinfluence of the spring H, to project the pushing finger portion 69through the slot 61 into position to engage whichever one of theshoulders Si] or Gil is in adjusted position at the slot ill. The member68 also has a stop portion adapted to cooperatively engage with itscarrying lever 62 when the member 68 is in a position of maximumprojection, whereby continued movement of the lever 62, against theinfluence of its spring 10, will cause the finger 69 to press upon theshoulder 60 or 60', as the case may be, and advance the plate 55 on theplate 39 in a direction radially of the record stack 22. The plate 55has a pushing edge which may be defined by an upstanding flange 12, saidpushing edge extending between the record edge supporting lugs d2.Accordingly, when the plate 55 is moved as a result of the operation ofthe lever 62, the pushing edge 12 will engage and press upon the edge ofthe lowermost record in the stack 22, and will thereby move said recordto align the central opening thereof with the support member 33 of thecenter pin, to thereby release such lowermost record from the stack andallow it to drop into playing position on the turntable I3.

Simplified driving mechanism is provided in order to operate the recordfeeding mechanism and to correlate the operation thereof with recordplaying movements of the pick-up arm 2|. This driving mechanism operatesautomatically for record changing purposes by first lifting the arm 2!from a record being played, and swinging it to a retracted or stand-byposition outwardly of the record. Performing its operating cycle, therecord feeding mechanism then actuates the record feeding lever 62 todeposit the lowermost record in the stack 22, in playing position, onthe turntable. Finally, the mechanism advances the arm 2| radiallyinwardly with respect to the turntable, and deposits it upon the recordin position to commence the playing thereof.

To these ends the actuating mechanism comprises a movable frame 13supported on the underside of the plate l2, said movable framepreferably comprising a U-shaped member supported for pivotal movementabout an axis extending at an angle with respect to the axis of turningmovement of the turntable, said axes preferably extending in a commonplane and being disposed preferably at right angles the one with respectto the other. As shown, the preferably U-shaped frame 13 has a pair ofspaced arms l4, disposed on opposite sides of the sleeve portion it ofthe turntable, the frame 73 having a medial portion 15 interconnectingthe arms 14 and fastened at its midpoint on a shaft 16, which extendsthrough and is journaled in bearing means '17, in one of the legs of thebracket 26. The shaft 16 extends beneath the pedestal '20, on which thepick-up arm 2| is mounted, and is also journaled in a bearing 18 carriedby a bracket 13 supported on the plate l2.

The frame 13 thus comprises an operating member periodically movableunder the driving influence of the motor ll to turn the shaft 16. Theshaft 16, in turn, is cooperatively associated with the pick-up arm 2!through means cxtending within the pedestal 2B and operable to raise,swing, and lower the pick-up arm in accordance with movements of theshaft 16.

In order to drivingly rock the frame 13, the

sleeve member.- 1-8, which; forms a part of the turntable and hence isdriven by the motor H, is providedwith a driving cam member 80 which isformed with a helical cam groove 8|, and the arms 14 of the bracket areprovided each with 1 clutch means 82 and 82 adapted normally to remaininactive, but operable in succession todrivingly cooperate with the camgroove 8| in order to rock the frame on its pivot through substantiallyv90 to a projected frame position through the operation of one of theclutch devices, and then, through the, operation of the other clutchdevice, to return the frame to its normal or stand-by position.Operating means drivingly connected-with the frame'13 is provided foroperation during movement ofthe frame from projected to stand-byposition, is

provided for swinging the pick-up arm 2| to a starting position at theedge of the record and for lowering the arm into playing position on therecord. I

As shown, the cam member 88 comprises a substantially spherical memberwhich may conveniently be formed of mouldable material. The cam memberis secured on the sleeve H5 in any suitable fashion, as by moulding itdirectlyupon the sleeve. The helical cam groove 8| is formed on thesurfaces of the member 80 in position to engage and drivingly receivedriving pins 83;, 8,3, the same comprising operating parts of the clutchmeans 82 and 82'.

The driving pins 83 and 83 have cam engaging ends extending through andguided in openings formed in the bracket arms 14. Each arm 14 carries abracket member 84, which conveniently may comprise a sheet metal stripbent to U-form, with the arms of each strip attached to the bracket arms14 on which it is mounted. The pins 83, 83 have portions extendingthrough openings in the medial portions of the strips 84 whereby saidpins are slidably supported on the bracket arms 14 and on the medialportions of the bracket strips 84. The pins 83, 83' are provided eachwith a peripheral shoulder 85 and are normally urged as by means ofsprings 86 in a direction to project the inner ends of the pins towardthe cam member 80, which is disposed between the bracket arms 14.

' The pins 83, 83Iare' thus normally urged into position to engage theends thereof in the cam groove 8|. Such movement of the pins is limitedby the engagement of the shoulder portions 85 with the bracket arms 14.If desired, washers of resilient material 85 may be applied to the pinsin position extending between the bracket arms 14 and theshoulderportions85 to-eliminateany clicking noise which might otherwise occurupon, engagement of the shoulder portions ,85 with the bracket arms 14,when the pins are suddenly moved to projected cam engaging position Thesprings 86, conveniently, may be applied in position encircling the pins83, 83 and bearing, at the opposite ends of the springs, upon theshoulder portions 85 and the medial ortions of the, bracket strips 84 Iv I The pins 83, 83' arenormally retained in re-; ZM W fiP S l Q f H.1 1b ck b mea f latches 81,- said latches preferably comprising sheet metalmembers pivotally supported on pins 88 carried by the brackets 84; These1atches8'l have pin holding prongs 89 adapted to engage be neath heads98, on, the pins, to hold the pinsin retracted position against theinfluence of the springs 86. The latch members 81 each have an actuatingarm 9|, and a spring 92 is connected between each arm 9| and the bracket13 to normally urge the members 81' toward pin latching position. Bymoving the arms 9| against the influence of the springs 92, the members81 may be moved each to release its latched'pin for movement fromretracted latched position into driving engagement in the cam groove 8|.

By thus releasing the latch member 81 of the driving device 82, the pin83 may be projected into engagement with the groove 8| of the camdevice, atone end of said groove, thereby causing the frame 13 to movefrom its stand-byposition,

shown in solid lines in Fig. 13, to a projected'position shown in dottedlines in said figure, movement of the frame being caused by the drivingaction of the helical cam on the bracket carried pin 83, the cam beingcontinuously driven by the motor I1, through the turntable l3. When thebracket 13 reaches its projected position, the pin.- 83 engagm arelatching lever 93;on the cam. member 88, at the end' of the groove 8|Any suitableor preferred resetting means may, of course, 7'

be employed, as, for example, by forming the bottom ofthe groove 8| atits end with an outward inclination for engaging and projecting the endof the pin 83 in a direction radially outwardly of the axis of rotationof the member. 80, whereby to relatch the pin 83. As shown, however, therelatching cam 93 comprises a preferably sheet metal strip pivotallymounted as on a pin 94. on the member 88, said strip having an endextending in the end of the groove 8|; and said strip is normally urgedas by means of a spring 95 into position to engage the end of the pin 83as it reaches the end of the groove 8|. 8 Upon engagement of the pin 83with the member 93, said member-may swing on its pivot 94 against theinfluence of the spring"95 to project said end in a direction radiallyoutwardly of theaxis of rotation of the member 80, and thereby aid inmoving the pin 83 to its relatched position, in which 5 it willthereafter be secured by the associated latch member 81. a v a -'-Whenthe frame 13 reaches its-projected position, shown in dotted linesi'n'Fig, 10, the driving cam mechanism 82', with pin in retractedposition, will extend adjacent the cam carrying sleeve IS. The arm 9 Iof the latch member of the mechanism 82 is provided with an extension 9|comprising a lug adapted to extend adjacent the cam carrying sleeve Itin position to be engaged by a tripping finger 96 on said sleeve l6 sothat the continuous rotation of said sleeve, driven by;

the motor I1, will move the arm 9| to unlatch the pin 83 as soonas theframe 13 reaches its pro jected positionin which the tripping finger 96.may engage the lug 9|. Thereupon, the pin 83' will be projected intoposition toengage in the, cam groove 8 I, thus forming a drivingconnection; through which the cam member may return the frame 13 toitsinitial orstarting or stand-by position,- shown in solid lines in;Fig. 13, therelatching cam 93 operating torelatch the pin 83',

when said pin83 reaches the end ofthe groove 8|, such relatching actionof the pin 83" being; a o p i hed. in exac y t esame fa hion asthe 16relatchingpf the pin 83.;

It will be seen from the foregoing that, after the latch 91 of thedriving mechanism 82 has been operated to release the pin 03, theprojection of the frame I3 from stand-by position, to projectedposition, and the return thereof to stand-by position, will beaccomplished automatically by the operation of the relatching. cam means93 and of the latch tripping finger 96. Accordingly, the projecting andretracting movement of the frame I3 and of the shaft 16 may be and isutilized to lift and return the pick-up arm 2| to its retracted positionclear of the turntable, then to actuate the record feeding mechanismduring projecting movement of the frame 13, and finally to swing,anddeposit the pick-up arm in playing position on the delivered record andto release the same for playing movement "upon the record, during thereturn movement of the frame 13 from projected to retracted or stand-by.position.

To this end the support pedestal 20 forms a vertical bearing for an armsupporting tube 91, which is turnable within the pedestal 20. One end ofthis tube 91 extends at the upper end of the pedestal and carries abracket 98 upon which the arm 2| is pivotally supported as by means of ahorizontal pivot pin 99. The tube 91 has an end extending outwardly ofthe pedestal beneath the support plate I2, said end carrying an arm orblade I extending radially outwardly of the tube and turnable therewith.Vertically movable within the bore of the tube 91, and having splineddriving connection therewith, is a pin -IOI having an end projectingupwardly of the pedestal in position to engage a bearing block I02 onthe arm 2|. By moving. the pin |0| up or down through the sleeve 91 andpedestal 20, the arm 2| may be raised or lowered on its pivot pin 99. Byturning the pin IN on its axis, the arm 2| may be swung horizontallyabout the axis of the pin, through the splined connection of the pinwith the sleeve 91 and the connection of said sleeve through the bracket98 with the arm 2|. Means is provided for thus raising and lowering thearm 2|, by axial movement of the pin IN, and for swinging the arm inresponse to the projecting and retracting movement of the frame I3during its operating cycle following the 7 release of the clutchmechanism 82.

To this end the frame connected shaft 15 extends beneath the end of thepin IM and is provided with a pin lifting cam I93, comprising a collarformed with aradially extending pin lifting finger, positioned ontheshaft I6 to elevate the-pin during the initial period of shaftmovement when the frame I3 is projected from stand-' by position.Operation of the lifting cam I03, thus, will lift the pick-up devicefrom engagement with the record immediately after the mechanism 82 isoperated at the conclusion of the playing of a record.

In order to swing the arm 2| to retracted position, the pin I0| carriesan arm swinging disc I04 having a roughened or serrated marginal edgeI05 on its under side, and the shaft I6 car'- ries a driving segment|06'having' a driving edge I01 preferably formed of frictionmaterial,such as leather, for engagement with the roughened edgeportions I05. This driving segment is so positioned on the shaft as tocommence its driving engagement with the disc I04, as the-result ofturning movement of the shaft, as soon as the pin |0I has been lifted toraise the arm 2! from engagement with a record on the turntable. The

segment is also formedto continue its driving movement with the disc I04sufficiently to swing the arm 2| to stand-by position, clear of the edgeof the turntable, as the result of movement of the frame I3 to the fullyprojected position shown in dotted lines in Fig. 13. After operation ofthe record feeding mechanism during the terminal interval of projectingmovement of the'frame I3, the segment I06, during return movement of theframe I3 to stand-by position, is operable to swing the arm 2| radiallyinwardly of the turntable until the arm reaches a predetermined startingposition for record playing purposes,

In order to stop the arm in starting position at the edge of a record,in playing position on the turntable, a stop latchIBS is provided inposition to engage the arm I00 as thesame swing inwardly with the arm2|. This stop latch I08 preferably comprises a sheet metal memberpivotally mounted for swinging movement on a pin 7 I99 which is fastenedon and extends beneath the plate I2. Where standard ten-inch ortwelveinch records are to be accommodated, the latch member I08 may beprovided with a pair of stop shoulders III] and H2. Sprin means III isprovided and connected between the member I08 and a spring anchoring pinon the support plate I2 for normally urging the latch member I03 in adirection to present the shoulders H0 and H2 in the path of swingingmovement of the arm I00. A stop pin I33 may be mounted, on the supportplate I2, in position to engage and limit the movement of the member I08in one direction, to thereby normally present the member I08 with itsshoulder H2 in position to engage the arm I00. Accordingly, the arm I00will engage and, with the pick-up arm, will be stopped by said shoulderII2 when the pick-up arm 2| is in position to start playing, say, atwelve-inch record on the turntable. The member I00 has a finger I I I,by means of which it may be adjustably shifted from its normal position,determined by the pin I I3, into shifted position, presenting theshoulder H0 for stopping engagement with the arm I00. An adjustingmember I I5, preferably comprising a sheet metal strip, mounted on thesupport plate I2 for shifting movement longitudinally of the strip I I5,is provided for so shifting the member I98. To this end, the member H5is provided with a lug IIIS for engaging the finger H4, the member II5being also connected with a lever arm I I! carried on a shaft I I8,which is turnably supported on the plate l2 and which extendstherethrough and within the pedestal 38 of the record feeding mechanism.This shaft H8 is drivingly connected with the adjusting lever 45, andturns therewith as the same is moved in adjusting the feedingmechanism31 to records of various sizes. Accordingly, when the feeding mechanismis adjusted to a large size twelve-inch record, the member I I5 will bein position releasing the member I98 so that it may occupy its normalposition determined by the pin II3 to present the shoulder I I2 'forstopping engagement with the arm I00. When the adjusting lever 5'5,however, is 'in position setting the feed mechanism forsmaller ten-inchrecords, the member [IE will have been shifted into position engagingthe lug I I6 with the finger I I4, to thereby move the arm I08, againstthe influence of its spring, into position presenting the shoulder 0 forengagement with the arm I00. Accordingly, depending upon the'adjustedposition of the feeding device, thearm I00 may be stopped by the memberI99 in position to start the playing, on

13 the turntable, of a record of the size to which the feeding mechanismis adjusted.

After the arm I has engaged a shoulder of the member I08, the frictiondriving segment I06 may slip with respect to the disc I04 as the shaft16, driven by the frame 13, continues to rotate during the returningmovement of said frame toward its stand-by position. The shaft 16 alsocarries an arm H9, fast thereon, which extends in position to engage arelease lug I20 on the member I08, to retract the same against theinfiuence of the spring III and withdraw the stop shoulders fromengagement with the arm I 00, as the frame 13 reaches stand-by position,whereby to release the arm M for free playing movement above the record.The arm II9 andthe'lifting cam I03 are oriented on the shaft .16 so thatmovement of the cam I03, with the shaft 16, as the frame I3 reaches itsretracted or standby position, will result in lowering the stem II, tothus engage the pick-up device, on the arm 2|, with the recordcontemporaneously with the release of the stop latch I08 from the armIIII, by engagement of the arm I I9 With the retracting lug I20.

In order to release the driving pin 83 of the clutch mechanism 82, inorder to initiate the driving cycle of the frame 13 and connectedmechanism, a release lever I2I, for releasing the latch 81 of the clutchmechanism 02, is provided. This lever I2I may be pivoted'o-n a pin I22,carried by the support plate I2, and may be formed with a lug I23 inposition to engage a finger portion I24 on the actuating arm 9| of thelatch 81, to thus release the latch of the mechanism 82 and allow thepin 83 to enter the cam groove 8|.

The lever I2I has an arm I25 pivoted thereon and provided with a stoppin I26 in position to engage an edge of the lever I 2| and limit theturning movement of the arm I25 thereon in one direction. Spring meansI21 is provided between the arm I25 and the lever I2I to normally urgethe arm yieldingly in such direction. The lever I2I also is normallyurged on its pivot I22 in a direction to retract the lug I23 from thefinger I24, and to present the end of the arm I25, which is providedwith an actuating finger I28, into the path of the cam finger 96 on thesleeve I6, which supports the cam member 80 and is adapted to be drivencontinuously by the motor I1 while the record playing and feedingapparatus is in operation. To this end, a spring I29-may be connectedbetween the lever I2I and an anchor pin on the plate I2.

I The lever I2I is normally held in an inoperative or stand-by positionby means of a lug I30 on a trip lever I3I, whichis pivotally mounted ona pin I32 carried by the plate I2. This lever I3I has an arm provided atits end with an adjustable set screw I33. The arm supports the set screwin position to be engaged by the end of the arm I 00 when the pick-uparm 2I is in position at the conclusion of the playing of a record onthe turntable. The arm I 3I' is normally urged as by means of a springI34, in a direction to engage the lug I30 with the lever I 2| to holdsaid leverin its inactive position, movement of the lever I 3| undertheinfiuence of the spring I34 being limited by a stop pin I35 on theplate I2.

The set screw I33 may, of course, be adjusted to cause engagement of thearm I00 with the lever I3I, when the arm 2I reaches a predetermineddistance from the center pin 26, during the playingof a record. The armI3I, thus,

I By moving the knob I40-to position the notch may be moved by the armI00 in a counterclockwise direction viewing Fig. 11, against theinfluence of the spring I34 to disengage the lug I30 from the lever I2I,thereby allowing the lever I2I to swing on its pivot I22 under theinfluence of the spring I29 into position presenting the lug I28 of thearm I25 into the path of turningmovement of the finger 96. When thelever I2I is in its inoperative position, held by the lug I30, thefinger I28 is disposed radially outwardly of the path of the finger 96,but after release of the lever I 2I, engagementof the finger 96.

with the finger I28 will thereafter move the lever I2I on its pivot I22in a clockwise directionment, whereby to maintaindriving engagementbetween the fingers 96 and I28. In this fashion,

the lever I2I may be moved through a substantial angle of displacement,the arm I25 having 1 an action akin to that of a toggle. After the leverI2I has thus been moved to extended latch tripping position, the nose ofthe finger 96 may turn itself on the finger I28 whereby the'finger I28may ride down the inclined trailing surface of the finger 96 as the samecontinues its rotation; and the finger I 28 will be released, and maysnap back to retracted position on the lever I2I under the influence ofthe spring I21, thereby allowing the lever I 2I to return to normalposition under the influence of the spring I 29. i The lever I3I is alsoformed with an extension I30, the same conveniently comprising ahextension of the lug I30. Said extension I30 may be disposed in positionto be engaged by a lug I36 on a bar I31, slidingly secured on thesupport plate I2 as by means of a headed pin I38 on the plate I 2, andan elongated slot I39 formed in the bar. This bar extends beneath theplate I2 to a position outwardly of the turntable, and may be fastenedto a manually op erable knob I 40 mounted for sliding movement on theplate I2 in position accessible from above the plate. A latching memberI4I, having adjacent notches I42 and I43, may be connected with themanually operable knob I40, in position extending preferably beneath theplate I2 said latching member I4I being cooperatively associated with alatching spring I44. The latching spring preferably comprises a leafspring supported at one end on the plate I2 and having a free endextending adjacent the member I4I. Near its free end, the spring is bentto provide a latching rib I45 and an adjacent inclined spring extensionI46. The knob I40 may be shifted in one direction, as downwardly viewingFig. 1, to engage the notch I42 with the rib I45. When latched in suchposition, a lug I41 on the bar I31 will be disposed in position engaginga lug I48 on the lever I2I to thereby prevent movement of the lever,under the infiuenceof the spring I29, into position allowing engagementof the finger I28 with the finger 96. Accordinglywhen the manual controlknob is so positioned, the lever I 2I will be locked against operationto unlatch the clutch member 82, and the apparatus will be conditionedfor so-called manual operation by inhibiting the automatic operation ofthe record feeding apparatus;

During opposite sides of the disc.

I43 in engagement with the rib Hi andthe spring extension I45, the barI3? will be moved to release the locking finger It? from the finger I48.and the mechanism will be conditioned for normal automatic operation. Ifat any time during the .playing of a record, as when it is desired toreject an unwanted record by feeding a successive record immediately tothe turntable, the knob I40 may be moved, as in an upward directionviewing Fig. 1, against the yielding resistancev of the spring extensionI 36, operating against aside of the notch I 53. Such movement of theknob ME] and connected bar 53'. will cause the finger I36 to engagewiththe extension I39, thereby turning the lever I3I on its pivot I32,against the influence of the spring IN, to disengage the lug I38 fromthe lever I2I and, thus release: the same for operation to release thelatch of the clutch mechanism 32. Thereupon, the mechanism will operateto lift and retract the pick-up device from the record being played, tofeed a new record disc from the stack 22 onto the turntable, and toreplace the pick-up device in start playing position on the new recorddisc.

The actuating lever 62 of the record feeding mechanism is actuated by aconnecting rod 549, connected between the end as of the lever 52, andtheend of a lever I50 which is pivoted for turning movement on a supportpin I5I, on an arm of the bracket 24. The lever I59 carries a camfollowing roller I52, adapted to ride upon the edge of a cam disc I53,which is secured to the frame 13. The pivot pin I5I also carries a leverarm I54, provided with a cam following roller I55, the levers I55 andIE4 being disposed in position extending on opposite sides of the camdisc I53, so that the rollers I52 and I55 may ride on Spring means I55is connected between the levers I56 and I55, in order to yieldingly drawthe same together to maintain the rollers I52 and IE5 in engagement withthe opposite sides of the cam disc. The cam disc is formed as at I5'I toproject the roller I52 outwardly of the'axis of rotation of the camdisc, to thereby swing the lever i523 on its pivot .I5I to move theconnecting rod I49 and the lever 62 sufiiciently to accomplish thefeeding of a record disc through the action of the edge pushing member55; and this may be accomplished by properly locating the cam portionIE: to cause the feeding of a record disc, as the frame I3 proaches itsposition of maximum projection during its cycle of operating movement.

The roller I55 operates in a cut out portion I58 of the cam disc, andits carrying arm its serves to limit the operating movement of the discand frame I3, and as an anchorage for the spring I53. The arm I54 alsoserves yieldingly to latch the frame I3 and connected operating elementsin retracted or stand-by position. To this end, thecut out portion I58of the cam disc I53 may be formed with a latching notch or cavity I58 inposition to receive the roller 955 when the frame I3 is in stand-byposition. It will be seen, also, that the arm I54 is moved through asmall angular displacement, in a-clockwise direction, viewing Fig. 10,asthe roller I55 leaves the latching cavity I58 when the frame I3 isprojected from stand-by position; and the arm will remain in suchdisplaced'positicn; withthe roller I55 supported on'the camportion lee,until theframe 13 returns to stand-by position at the conclusion of itsoperating cycle. This action of the arm I54 is utilized to lockthe'latch release leverI2I in an inactive position,yafter 16 it hasbeenactuated by the finger S6 to release the latch of the clutch 82, andthus'prevent the lever I2I from being repeatedly actuated by the finger96 during the interval before the holding member I3I becomes restored toposition to control the lever I2 I. To this end, a lever locking memberI50 may be pivoted on the pin l5I, adjacent the lever I55. The memberI58 may be provided with a locking shoulder IfiI and may be normallyspring urged, in a clockwise direction in Fig. 10, into position toengage a lug I52 On the lever I2I. Inter-engaging means I63 on the leverI5 2 and member I60 serve to limit the clockwise movement of the memberI55 and may also operate toretract the latter when the roller I55 entersthe cavity I58. Accordingly, as soon as the latch of the clutch 82 hasbeen released by the action of the lever I2 I, driven by the finger 96,the arm I54 will be projected to present the locking member I53 toengage the lever I2! on the shoulder IGi and prevent it from beingprojected by its spring I29 into position to be again actuated by thefinger 95; and the lever I2I will remain so locked by the member I50until said member is retracted from lever locking position by the 1&V6JI54 when the roller I55 enters the cavity I58 as the frame 13 returns tostandby position at the conclusion of its operating cycle. At such timethe lever will be released for operation under the control of the leverI3 I The member IE9 may also be provided with a shoulder I5 I inposition to engage the lug I62 of the lever IZI, upon release of saidlever by the tripping lever I3I to initiate the operating cycle of themechanism. When the lever I2I is released by the tripping lever I39, theshoulder I6I serves to hold the lever I2! in exact position with respectto the path of the actuating finger 95 so that said finger may engagethe toggle member I26 for the actuation of the lever I2 I.

It will be seen from the foregoing that the mechanism affords relativelysimple and inexpensive record playing apparatus, in that substantiallyall of the parts may comprise sheet metal stampings, while the cammember 8! may be inexpensively produced as a moulded element or a turnedelement produced on automatic machinery. Exceedingly simple controlmeans is provided for conditioning the apparatus either for manual orautomatic operation; and the mechanism provides means manually operableat any time, during the playing of a record, to discontinue and rejectsuch record and deliver a succeeding record from the stack.

The apparatus operates automatically at the conclusion of the playing ofa record by engagement of the arm I05 with the actuating lever I3 I,movement of which, by the lever Hi5, releases the lever I2I for movementinto position to be actuated by the continuously turning finger cam 96,said cam serving to project the lever I2! into position releasing thelatch fll'of the clutch device 52. Up on release of the clutch device,its pin 63 drivingly engages the groove 8I'of the driving cam and turnsthe frame I4 from stand-byte projected position. During such movement ofthe frame M, the arm II9 first releases the stop latch I58, which movesto a normal position depending upon the size of the records 'in thestack '22. Upon further movement of the frame 73, the cam I 03 raisesthe stem I (SI and lifts the pickup arm 2| from the record disc.Continued movement of the frame I3 immediately thereafter engages thesegment IIl'I with the disc I54, and swings the'pick-up armputwardly' ofthe turntable to a stand-by position determined by todeposit a record,from the stack 22, in playing position on the turntable.

-When the frame 73 reaches the limit of its projecting movement, the pin03 engages the relatching lever 93, and is relatched out of drivingengagement with the cam groove 8| At the same time the releasing fingerSI of the clutch device 82' is disposed in position to be actuated bythereleasing member 96. Thereupon, the

driving pin 83' of the clutehmember 82' is projected into engagementwith the cam groove 8|, to return the frame 13 from projected tostand-by position.

During the return movement of the frame 13, the segment I00 first movesthe pick-up arm 2i from its retracted position into position to commencethe playing of the record onthe turntable, as determined by theengagement of the arm I00 with one or the other of the shoulders H0 andH2 of the stop lever I08, the segment slipping on the disc I04 after thearm I00 becomes engaged by one of said stop shoulders, to permitcontinued movement of the driving segment I06 with the shaft 16.Immediately thereafter the cam I03 releases the pin IM and allows thepickup arm to drop into playing engagement with the record; and the armH9 simultaneously engages and retracts the lever I 08 to release it fromstopping engagement with the arm I00. Thereafter, the pin 83', havingreturned the frame 13 to its stand-by or retracted position, engages therelatching lever 93 and is thereby returned to latched positionretracted from the driving cam 80.

It should be noted that the lever I3I, after having been actuated torelease the lever I2I for clutch unlatching purposes, either by recordrejecting movement of the bar I31, or by the arm I00 at the conclusionof the playing of a record, will immediately return to its normalposition determined bythe spring I 34 and pin I35, as soon as the barI31 shall have been released, or as soon as the arm I00 shall have beenswung away from the lever I3I by the operation of the during segmentI00. Accordingly, after operation of the lever I2I, for latch releasingpurposes, it will be held in locked position by the member, I60controlled by the arm I50 and cam means I 58 and IE8. The lever I2 isreleased by the member I60, at the conclusion of the operating cycle ofthe frame I3, and may then return to its normal inoperative positionheld by the lug I30 of the lever I3I.

It will be seen from the foregoing that the devices of the presentinvention afford exceed ingly simple yet positively actingintermittently operating mechanism which may have general purposeapplication but which is especially well suited for initiating andcontrolling the automatic performance of a phonographic record discchanging cycle. Inexpensive means, comprising the three-position controlknob I40, is provided for locking the mechanism against operation, foradjusting it for automatic operation and for manually initiating itsoperating cycle. As applied in phonographic record disc playingequipment, this control knob provides for record rejection at any timeand for the control of the mechanism for automatic or manual operation.The employment of the release member 96 for actuating the latch means ofthe clutch 82' and also to operate the latch releasing lever I2I;

affords an exceedingly simple and inexpensive, yet positive, means forcontrolling the operation of the clutch devices 82 and 82'. Theemployment of a driving cam I53, of inexpensive con- 'struction, and theutilization of a shaft I0 for accomplishing the swinging of the pick-uparm and the actuation of the record disc feeding mechanism in timedrelation, affords an exceedingly simple and inexpensive constructionwhere by the necessary operations are accomplished positively in therequired sequence' The mechanism also affords exceedingly satisfactory,yet inexpensive, means for conditioning the same for theacco'mmodationof records of various size, by the correlation of the 'stop member H5with the manually shiftable lever 45, the

' operation of which is necessary to adjust the record feeding mechanismto the size of the records being played.

An important feature of the invention is the rapidity with which therecord changing operation is effected, and the relatively low cost ofmechanism required.

No claim is made per se for the novel center pin constructionillustrated and described herein, since the same forms the subjectmatter of invention set forth in the co-pending application of Harold C.Lawin, Serial No. 756,152, filed of even date herewith, now Patent No.2,536,190, issued January 2, 1951.

It is thought that the invention and its numerous attendant advantageswill be fully understood from the foregoing description, and it isobvious that numerous changes may be made in the form, construction andarrangement of the several parts without departing from the spirit orscope of the invention, or sacrificing any of its attendant advantages,the form herein disclosed being a preferred embodiment for the purposeof illustrating the invention.

The invention is hereby claimed as follows:

1. Intermittently operable mechanism, comprising a cam member havingspherical sides formed with a helical cam shoulder, means to drive saidcam member about a rotational aXis, an actuating member rockable aboutan axis normal to and lying in a common plane with said rotational axis,said actuating member having portions disposed on opposite sides of saidcam member and carrying clutch members projectable into drivingengagement with said helical shoulder whereby to rock said actuatingmember on its axis.

2. Intermittently operable mechanism comprising a driven cam membermounted for rotation about its axis and having substantially sphericalside surfaces formed with a helical driving shoulder thereon, saidshoulder having a leading end and a trailing end, a rockable ac tuatingmember comprising a shaft and a shaft connected driving bracket havingarms extending on opposite sides of said cam member, in position to rockin spaced relation with respect to the spherical side surfaces thereof,a clutch comprising a driving pin on each of said arms, means normallyurging said pins on said arms into position drivingly engaging saidhelical shoulder, latch means for holding said pins retracted on saidarms, in position disengaged from said shoulder, yieldable latch meansfor holding said rockable actuating member in retracted stand-byposition, means to release the latch means of one of said pins fordriving engagement with said shoulder, at the leading end thereof,whereby to rock said actuating member in one direction, from retractedstand-by position to projected position, by movement of the pin alongsaid shoulder from its leading to its trailing end, means operable torelease the latch means of said other pin for driving engagement withsaid shoulder, at its leading end, when said roclgable actuating memberreaches its projected position, whereby to return the same to retractedstand-by position by movement of the p along th shoulder m i le d to itstrailing end, and a pin relatching cam in position to engage saiddriving pins,as they reach the trailing end of said shoulder, todisengage them ,Irorn the shoulder and relatch them in retractedposition on said arms.

JOSEPH ERWQQD.

REFERENCES CITED The following references are of record in the file ofthis patent:

NI ED S E A ENT Number Name Date 1,655,081 Adams Jan. 3, 1928 1,738,512Andrews ea. 10, 1929 2,271,001 Fortune Jan. 27, 1942 2,328,641 GlaserSept, 7, 1943 2,339,981 Cranmer et a1 Jan. 25, 1944 2,343,992 MorrisonMar. 14, 1944 2,352,331 Leline June 27, 1944 2,366,858 Knox etal. Jan.9, 1945 2,370,875 Pressley Mar, 6, 1945 2,376,741 Weaver May 22, 19452,394,539 Erwood et a1. Feb. 12, 1946 2,490,678 Dale Dec. 6, 19 19FOREIGN PATENTS Number Country Date 106,995 Sweden V Mar. 30, 1943Switzerland Aug. 16, 1946

